Chemical Engineering MCQs

6108 MCQs  (Page 253 of 611)

Attempt Chemical Engineering Quiz
Mass flow of granular solid (M) through a circular opening of dia, D follows_____________________?
A. M ∝ √d
B. M ∝ d2
C. M ∝ d3
D. M ∝ d
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Size reduction does not occur due to compression in case of________________?
A. Rod mills
B. Gyratory crushers
C. Jaw crushers
D. Smooth roll crushers
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The capacity of a belt conveyor depends upon two factors. If one is the cross-section of the load, the other is the _____________ of the belt?
A. Speed
B. Thickness
C. Length
D. None of these
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The grinding in a hammer crusher takes place due to the_______________?
A. Attrition
B. Impact
C. Both a. & b.
D. Neither a. nor b.
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Which of the following is not an ultrafine grinder (colloid mill) ?
A. Micronizers
B. Agitated mills and fluid energy mills
C. Toothed roll crusher
D. Hammer mills with internal classification
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Compressibility co-efficient for an absolutely compressible cake is_______________?
A. 0
B. 1
C. 0 to 1
D. ∞
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If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is φs is defined by________________?
A. Φs = 6 vp/dpsp
B. Φs = vp/dpsp
C. Φs = 6 dpsp/vp
D. Φs = dpsp/vp
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A 30% (by volume) suspension of spherical sand particles in a viscous oil has a hindered settling velocity of 4.44 μm/s. If the Richardson Zaki hindered settling index is 4.5, then the terminal velocity of a sand grain is_________________?
A. 0.90 μm/s
B. 1 μm/s
C. 22.1 μm/s
D. 0.02 μm/s
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Which of the following crushers can be considered as a combination of a jaw crusher and a roller crusher ?
A. Rod mill
B. Fluid energy mill
C. Gyratory crusher
D. Ball mill
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Handling of ashes and similar materials can be done best by a ______________ conveyor?
A. Flight
B. Drag or slat
C. Belt
D. Ribbon
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Word of the Day
28 Jul
Fragile
(of an object) easily broken or damaged.
نازک، کاغذی، آسانی سے ٹوٹ جانیوالا

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